NASA’s curiously worded press release earlier this week about an event later today prompted speculation that the space agency had discovered extraterrestrial life; going by a leak ahead of conference, it’s actually something about as alien as you can get from physiology as we know it, only on this very planet. According to NOS, NASA has found a new type of bacteria in Mono Lake, California, which lives with levels of arsenic in its biology that were hitherto believed impossible.